Soot-blowing device



1. KEn/INAL AND 1. HENRY.

` SOOT BLOWING DEVICE.

APPLICATION FILED DEC. 15, I`920.

1,377,622. l Pamed May 1091921.

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Q l Y Y WTORNEYS.

J. KEMNAL AND IHENRY.

soo BLowlNG DEVICE.

APPLICATION FILED DEC. I5, 1920.

1,377,622, v Patented May10,1921,

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45 a part Of the construction; Fig. Slis a seotion on the line 3-3 of Fig. 4; Fig. 4 is a q UNITED STATES/PATENT- ,.OFl-lca JAMES KEMNAL, OEOHIsLEHuRsT, AND'JOHN HENRY, -OE

AssIGNORs To THE BABOOOK.& WILOOX COMPANY, OE, sEY, A CORPORATION OE NEW JERSE sooT-BLowrNG DEVICE.

T all whom t may concern.'

Be it known that We, JAMES KEMNAL and p I JOHN'HENRY, subjectsof the King of Great'v Britain, residing at Kemnal Manor, Kemnal Road, Chislehurst, in the county of Kent, En land, and 112 Dalmeny avenue, Norbury, ondon, S. W., England, respectively,have invented certain new and useful- Improvements in a soot-Blowing Devlce, of

which the'following is a specification.

Our invention relates to soot-blowing devices for cleaning the soot from the tubes of water tube boilers. It has been proposed previously, in such cleaners, to arrange the soot-blowin elements, or distributing pipes, transversely of the longitudinal axes of the tubes either above or belowthe same and to furnish the blower units with nozzles adapted to be rotated, the discharging opening of said nozzles being disposed obliquely to the axis of theblower unit to discharge 0f the spaces between y throughout the length th,e tubes. Y

One of the objects of our inventionis to provide an improved valve arrangement for. controlling' the supply of the cleaning methe blower units. Another object is to provide an improved construction of soot-blowing element particularly suited to such improved `controlling means. A further object is to provide improved means permitting the blower elements -to move freely in any direction and independently of the boiler side walls, whether the latter be of brickwork or of iron casings. With 2 these and otherobjects 1n vlew, our invenfV tion consists in ltheearrangernents and con-- structions heremafter 'de scrlbed and more particularly pointed out in. thenappended claims.

The invention is illustrated in the accoml s, in which Figure 1 is a panymg drawin longitudinal section of one of the improved ling indicator; Fig. 7' shows an arrangedistributing or blower elements; Fig. 2 is. a section on the line 2-2 of Fig. 1,` showing section 'on an enlarged scale on theline 1 4 of Fig. 1; yig. 5 is a detail view of one of the nozzles; Fig. 6 is an end view of a blower device, showing the supply connec* tions for'thecleaning fluid and the controlment of a series of the improved blower despecication of Letters raient;

LONDON, ENGLAND, BAYONNE, NEW .TER

vices applied to a. Babcock & Wilcox typ-e of boiler; Fig. 8 1s a transverse section of the boiler illustrated in Fig. 7, showing one of the blower units in @sa sectional elevation on'the liner2f2 of Fig. 1, showing the manner in which the blower unit is suspended'to allow forfexpansion, and Fig. 10 is a trating one of .the brackets by which the blower element is secured to boiler tubes.

Referringtd the drawings, A denotes the soot-blowing element to which luid under pressure, such as com ressed air or steam, is supplied. The sootlowing elements may conveniently be secured to the top row of tubes of the boiler by brackets B, each of the elements preferably being provided with two independent chambers, compartments or passages A1 andfA2 formed by a partitionl l0. l Each of the chambers or passages A1 and A2 is fitted with a plurality of nozzles A3, the nozzles for ing in dierent directions and each nozzle being preferably provided with a number of dlfferently directed jetoriices A4 and A?, as shown in Fig. 5, for av purpose4 eX- plained later. v

detail view illusl the separate passages point' l Patented May 10,1921.y

Application filed4 December 15, 1920. Serial No. 430,989.

operation; Fig.l 9

From an inspectioof'Fig. 8, it will be apparent that oblique aislesva're formed inclined in two directions, one such setv of oblique aisles bein hindicated by the lines from the series o nozzles shown in thatI ligure as being directedtoward such aisles.v

or other ysuitablefconnections, a valve body C formed with two internal ports C1 and C2v cast ormachined therein, which ports -registerl zwith Ipassages A1 and A2 in such, blower element formed by the partition 10.

' -Within the valve body is mounted a- ,valve rmember D in which is formed an internal central passage having an elongated Cast inA one with the valve body 'C or otherwise secured thereto, is arhand wheel port D1, preferably arcuate in cross-section, as indicated in Fig. 2, so as tooverlap considerably the ports A1, A2 when in registry with either, the valve D being kept tight by the usual packing gland E. The supply piping vis connected to each blower unit by a bent pipe' F, as best shown in Figs. 1 and 6.

The valve body C, as sho-wn in Figs. 1 and 9, is supported from a spring-balance neck or sleeve piece Cr, Supported by means of a bolt H, or the like, from a lug on a box K secured to the side wall of the casing of the boiler, a spring G1 being interposed between the nut on the bolt and the box K. This spring-balanced neck or sleeve G permits the blower element to slide or move in any direction when any expansion of the latter takes place or should the brickwork in the side wall move in the setting, and at f the same time maintains a seal between the valve bodyv C and the box K. As will be seen from Fig. 1, a portion of the outer surface of the valve body C is made spherical, as at C6,to facilitate its movement within the sleeve piece Gr. The sleeve piece G is preferably guided '-to some extent in its movement relatively to the box K by providin the box with projecting studs K2 (see ig. 9) entering oval or other recesses in the adjacent faces of the sleeve piece.

The box is also provided with a stop K1 for coperation with a stop C4 on the back of the hand or chain wheel C3. p The blower element may be made in one or more connected pieces, according to the width and size of boiler, and each passage at the end remote from the operating end may be fitted with plugs to permit the passa e to be cleared of any impediment.

Vhen cleaning the soot from the boiler y tubes with steam as the cleaning medium,

f a drain valve body pige L with valve M is required, as shown in ig. 7. When compressed air is used as the cleaning medium, the drain pipe and valve are not required.

As the valve D is stationary, port D1 will always be at the bottom side, and when the indicator 11 on the hand or chain wheel C3 is vertical,l corresponding to the shut or closed osition, in the form illustrated, as shown 1n 6, the ports C1 and C2 in the ,along with chambers A1 and A2 of the blower unit A, will be closed, as shown in Fig. 9.

The operation of the apparatus is as follows:

By revolving the hand or chain wheel to the left-hand side, port C1 and chamber A1 are brought into communication with port D1, bringing the jets of chamber A1 in contact4 with the space -between the tubes slanting to the left-hand side, as indicated by lines in Fig. 8. Now, as soon as contact 1s made between ports D1 and C1, the cleaning medium rushes out of the jet holes of the nozzles A3 of chamber A1 only, passing into the spaces between the tubesto the lefthand This continues until the stop C* on while the wheel is being revolved, the cleaning medium rushes through the nozzles A3 of the chamber A2 and cleans the spaces between the tubes which incline to the righthand side. As the wheel revolves, the cleaning medium continues to flow through the nozzles A3 until the stop C4 on the wheel ligain abuts against the stop K1 o n the box As the wheel cannot turn further and the cleanin medium is still rushing out of the nozz es into the spaces between the tubes which incline to the right-hand side,

the wheel must be reversed and revolved until the indicator is brought into the upright position, when the ports C2 and chamber A2 are closed to the valve port. This completes the operation for the first blower unit, and the operation is repeated with all the other blower units until the cleaning of the boiler tubes is completed.

Now, as the planes of the spaces between the tubes lie at an angle to the blower units, and -when the latter is being revolved the cleaning medium which passes from the jets travels through an arc of a circle, in certain positions some of the cleaning medium from ythe tubes, both in depth and length, are

scoured bythe cleaning medium.

It will be clear that the valve arrangement may be employed'with an undivided blower unit having the nozzles all located on the same side of the distributing pipe.

We claim: t l

1. A soot-blowing device comprising a Vsoot-blowing element provided with separate passages and series of nozzles arranged obliquely to the axis of said element and communicating with the respective passages, one series ofnozzles being arranged to direct a cleaning ,iuid through one set of oblique aisles 'in a groupy of boiler tubes and another set being arranged to direct va cleaning fluid through another set of oblique aisles, and means for connecting 'said passages alternately with va-sour'ce of fluid supply.

`f2.-A soot-blowing device comprising an element having separatev passages and, a

series of obliquely-arranged nozzles on opv posite sides' of the element and communieating with the respective passages,l one of such series being arranged to direct a cleaning fluid through one set of oblique aisles in a group of boiler tubes and the other 'series being arranged Y to direct the fluid 4 through another set of oblique aisles, means wherebyl said .tubemay be 4rotated to bring each ot said series into position to direct jets ofI the fluid through the aisles with which the series coperates, and means to connect each passage with a source of supply only` when the series is in position to act on the aisles with which it coperates.

4. A soot-blowing device comprising an element having separate passages and two series of obliquely-arranged nozzles, comi' municating with the respective passages, onev of such Iseries being arranged to dlrect a cleaningfluid through one -set of oblique aisles in a group of boiler tubes and the 'otherv series being arrangedto directthe fluid' through another set ofoblique aisles, means whereby 'said element may be rotated .to' bringeach of said passages into posi-tion vnicating with the respective assages, one

yt'o direct jets of a cleaning lluidthrough the aislslwith which the series coperates, and means to connect each passage with a source of fluidsupply while the-associated series is bein rotated iny alinement with theA aisleswith'which it coperates.'

5. A soot-blowing device comprising an element having separate passages and two. series of obliquely-arranged nozzles commuof such-series being' arrange to direct `a` cleaning fluid through one set of oblique aisles in a group of boiler tubes and the other series being arrangedto direct the f lluidy-throughj'another set of oblique a1sles, nieanswherebysaid element may. bev rotated `.jtdbring eachmf said seriesinto position tov directrjetssf a 'cleaning fluid through the isles wiuyWhi-,h ,th .ser

means toconnect each passage with a source of fluid supply while the associated series is being rotated in alinement with. the aisles with which it coperates, each nozzle having a plurality of openings whereby the fluid is directed into the aisles as the nozzles are rotated.

6. A soot-blowing device comprising a.

rotary soot-blowing element provided with a plurality of nozzles and formed with separate passages with which different nozzles communicate, a source of fluid supply, and means for' connecting said passages alter- `nately to said source of fluid supply.

valve member provided with a port adapted to be connected to a supply of fluid under pressure, and a rotary soot-blowing element providedwith separate passages and a sep'- arate series of nozzles communicating with the respective passages, the end of the element formingva rotary valve member provided with ports communicating with said passages and adapted to communicate with and to be cut oil' from said stationary port by rotating. said member, one serles of nozzles'being arranged to direct the cleaning fluid throughone set of oblique aisles in a group of boiler tubes and the other series being arranged to direct the fluid through another set of oblique aisles.

9. A- soot-blowing device comprising a soot-blowing tube, a wall having a clearance opening through which vthe tube proj ects, a

member surrounding the tube adapted to seal said opening, and means for resiliently 'supporting said member from said wall.

lO. A s oot-blowing device comprising a soot blowing tube, a wall having a clearance opening tlrough which the tube projects, av

member, surrounding the tubek andl slidably closing said opening" and arrangedto .per-

mit the tube to be tilted andt'obe movedA bodily at right-'angles to itsuaxis and constructed and arranged to prevent'the'escape Jof gases between the tube and said member and i through -said `clearance space, vregardlessof the positixjn of the tube. v

Q11. A .soot-blow1 ng devicecomprising a soot-blowingelementcomprising a tube eX-' tending vacross and attached to the 'boiler tubes, a' support for the endeof the blower ies'lcoperates, and elementv fixed in the wall of the. setting,'an'd v130 resilient connections between the support and the end of the tube.

12. A soot-blowing device comprising a soot-blowing element extending across and attached to the boiler tubes7 a support for the end of the blower element fixed in the wall of the setting, and resilient connections between the support and the end of the tube, constructed and arranged to permit relative movement between the blower element and the support in a plane parallel to the boiler tubes.

' 13. A soot-blowing device comprising a soot-blowing element, a sleeve inclosing said element, means for resiliently supporting said sleeve from a stationary part7 said element being provided with a spherical portion engagmg said sleeve.

14. A soot-blowing device comprising a soot-blowing element, asleeve inelosing said element, means for resiliently supporting said sleeve from a stationary part, said element being provided with a spherical portion engaging said sleeve, said sleeve forming a seal between said element and said stationary part.

JAMES KEMNAL. JOHN HENRY.

Witnesses to the signature 'of James Kemnal:

HENRY PELHAM SMITH, JOHN HARPER MCKINLAY. Witnesses to the signaturepof John Henry:

JOHN WALTER HARGREAvEs, DOUGLAS BRUCE BREMNER. 

